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1 Introduction of hammer crusher 1.1 The advantages of hammer crusher Simple structure, compact size, small weight, small power consumption per unit product. Productivity is high, the broken than large (single rotor broken ratio can reach I = 10 ~ 15), the product of small and uniform particle size, a cube, less excessive breakage phenomenon. A continuous and reliable work, convenient maintenance and repair. Vulnerable parts easy to repair and conversion.23991
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1.2 hammer crusher
Main working parts, such as hammer, liner board, rotor disc, such as wear faster, particularly when the object is very hard work, wear faster. Went not easily broken metal crushing cavity, prone to accidents. St13 12% moisture content of materials, clay, or more discharge grate wall decreased productivity, and increase energy loss, so that accelerated the vulnerable parts of wear and tear.
Working principle: the material into the crusher, the immediate impact of the high-speed rotary hammer and smash. Broken material obtained from hammer kinetic energy, and at high speed to impact on the casing wall plate and grate and broken for the second time. Since then, less than the material of grate gap, then from the eduction in cracks, and particle size larger materials, back to the plate and grate on granular material, also it will have the additional impact crushing hammer head, in the whole process of material crushing, the material is mutual impact between the pieces.
1.3 The broken
Crushing process, must be the external force to be broken material work, overcome internal cohesion between particles, it can be broken. When the external force to the work, make it broken, the potential of the material also increased due to the transformation of work. As a result, power consumption theory is essentially clarified before and after the crushing process of input power and crushing material the relationship between the potential change.
2 The totality of hammer crusher and summary of the main part
This design is the single rotor, row hammer, not reversible hammer crusher, the article consists of casing, rotor, gas, strike plate, hammer, stents, plate, etc.
2.1 Chassis
By on the body, back cover, left side and right side of bolts into an organic whole, each part has upper inlet, internal with high manganese steel lining board, can be replaced after being worn out, casing leakage between shaft and ash phenomenon is very serious, in order to prevent leakage grey, have a shaft seal. Lower casing directly placed concrete, based on the fixed by anchor bolts. In order to facilitate maintenance, adjustment and replacement of gas, both sides before and after the body under a manhole. In order to facilitate maintenance, replacing hammer head is convenient, two side also have symmetrical open manhole.
2.2 The rotor
Is composed of main shaft, disk, pin, etc, there are four evenly distributed on the disc is pin hole, through the pin shaft will be three hammer head hanging up four selections. In order to prevent the disc and hammer axial channeling move. Pin with a lock nut fixed at both ends. The rotor bearing on two rolling bearings. In addition, in order to make the rotor in the movement to store certain kinetic energy, avoid broken chunks of material, the speed of the hammer head loss is not too big and reduce the peak load of the motor, at one end of the spindle is equipped with a flywheel.
2.3 The main shaft
Are the main parts, bearing rotor to withstand impact by it. Therefore, for the sake of their material has high toughness and strength. Usually section is circular, and a flat key connection and other parts. Hammer head is the main working parts. Its quality, shape, and material of crusher production capacity has a great influence. Therefore, according to the different size to choose the appropriate hammer quality of incoming material. To crushing medium hardness material, hammer with high carbon steel casting or forging, high manganese steel casting is also available. In order to improve the wear resistance, some of the hammer head surface coated with a layer of hard alloy, high chromium cast iron.